linux-toradex.git/arch/blackfin/include/asm/cachectl.h, branch v3.2.46 Linux kernel for Apalis and Colibri modules Blackfin: add new cacheflush syscall 2010-10-22T07:48:59+00:00 Sonic Zhang sonic.zhang@analog.com 2010-09-06T10:16:04+00:00 99a5b2878b56d24919eb7e646f2d8e02f63a6efc Flushing caches sometimes requires anomaly workarounds which require supervisor-only insns. Normally we don't need to flush caches from userspace so this isn't a problem, but when gcc generates trampolines on the stack, we do. So add a new syscall for gcc to use modeled after the mips version. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> 
Flushing caches sometimes requires anomaly workarounds which require
supervisor-only insns.  Normally we don't need to flush caches from
userspace so this isn't a problem, but when gcc generates trampolines
on the stack, we do.

So add a new syscall for gcc to use modeled after the mips version.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>